| article html file updated | 29 August 2025 20:48 CEST | Update | https://www.mdpi.com/2076-3921/2/4/216 |
| article html file updated | 15 July 2022 22:37 CEST | Update | N/A |
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| article html file updated | 17 June 2015 13:52 CEST | Original file | N/A |
| article pdf uploaded. | 15 October 2013 12:08 CEST | Version of Record | https://www.mdpi.com/2076-3921/2/4/216/pdf |
